I don’t have the greatest experience with TOD neither.
I used to live by St Mary's glacier Co (12,000ft above sea level) and commute to Denver, lots of snow in winter.

The TOD functions only if the TOD computer detects difference between front and rear shaft synchronization or when the gas pedal is pressed.
When TOD clutches are engaged then there is no out of synchronization condition detected and computer will almost instantly disengage the clutches despite the fact that the vehicle is still on slippery surface. Final result is hammering of the clutches when accelerating on snow ice etc. The Isuzu engineers could do better job at programming the TOD computer I think. I also assume that the vehicle was never tested in real life conditions.
One of the best advantages of any 4X4 is that with the power to all four wheels there is a lot better directional stability especially in turns and that is exactly when TOD will let you down.
Other rather stupid feature on VX is limited slip differential. Driver of the vehicle has no control over when the wheel lock up and when they do your rear end will slide sideways. The ltd diff is useless when off roading in low range because its grabbing strength is not adequate to maintain the diff locked anyway.
So what is the remedy? First install override switch for TOD then put in a set of real lockers.

VX922